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2006-02-01 - Article/Dans un journal avec peer-review - Anglais - 6 page(s)

Mathieu Vincent , Semay Claude , Brau Fabian , "Casimir scaling, glueballs, and hybrid gluelumps" in European Physical Journal A -- Hadrons & Nuclei, 27, 2, 225-230

  • Edition : Springer Science & Business Media B.V., New York (NY)
  • Codes CREF : Physique des particules élémentaires (DI1221), Physique théorique et mathématique (DI1210)
  • Unités de recherche UMONS : Physique nucléaire et subnucléaire (S824), Laboratoire Interfaces et Fluides complexes (S885)
Texte intégral :

Abstract(s) :

(Anglais) Assuming that the Casimir scaling hypothesis is well verified in QCD, masses of glueballs and hybrid gluelumps (gluon attached to a point-like c¯ pair) are computed within the framework of the rotating string formalism. In our model, two gluons are attached by an adjoint string in a glueball, while the gluon and the colour octet c¯ pair are attached by two fundamental strings in a hybrid gluelump. Masses for such exotic hadrons are computed with very few free parameters. These predictions can serve as a guide for experimental searches. In particular, the ground-state glueballs lie on a Regge trajectory and the lightest 2++ state has a mass compatible with some experimental candidates

Identifiants :
  • arXiv : 0511210 [hep-ph]
  • DOI : 10.1140/epja/i2005-10251-7